diff --git a/.travis.yml b/.travis.yml
index d9019c5c..006dae93 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -10,9 +10,9 @@ matrix:
   include:
     - rust: stable
     - rust: beta
-    - rust: nightly-2019-03-02
+    - rust: nightly-2019-06-15
   allow_failures:
-    - rust: nightly-2019-03-02
+    - rust: nightly-2019-06-15
 
 env:
   global:
@@ -25,8 +25,8 @@ before_install:
   - sudo apt-get install -y openssl libssl-dev libelf-dev libdw-dev cmake gcc binutils-dev libiberty-dev
 
 before_cache: |
-  if [[ "$TRAVIS_RUST_VERSION" == "nightly-2019-03-02" ]]; then
-    RUSTFLAGS="--cfg procmacro2_semver_exempt" cargo install cargo-tarpaulin
+  if [[ "$TRAVIS_RUST_VERSION" == "nightly-2019-06-15" ]]; then
+    RUSTFLAGS="--cfg procmacro2_semver_exempt" cargo install --version 0.6.11 cargo-tarpaulin
   fi
 
 # Add clippy
@@ -35,14 +35,14 @@ before_script:
 
 script:
   - |
-    if [[ "$TRAVIS_RUST_VERSION" != "nightly-2019-03-02" ]]; then
+    if [[ "$TRAVIS_RUST_VERSION" != "nightly-2019-06-15" ]]; then
     cargo clean
     cargo test --all --all-features -- --nocapture
     fi
 
 after_success:
   - |
-    if [[ "$TRAVIS_RUST_VERSION" == "nightly-2019-03-02" ]]; then
+    if [[ "$TRAVIS_RUST_VERSION" == "nightly-2019-06-15" ]]; then
     taskset -c 0 cargo tarpaulin --all --all-features --out Xml
     echo "Uploaded code coverage"
     bash <(curl -s https://codecov.io/bash)
diff --git a/actix-ioframe/CHANGES.md b/actix-ioframe/CHANGES.md
index a958a328..0f084238 100644
--- a/actix-ioframe/CHANGES.md
+++ b/actix-ioframe/CHANGES.md
@@ -1,5 +1,5 @@
 # Changes
 
-## [0.1.0] - 2019-xx-xx
+## [0.1.0] - 2019-07-17
 
 * Initial release
diff --git a/actix-ioframe/src/cell.rs b/actix-ioframe/src/cell.rs
index 1794dd66..e517aca1 100644
--- a/actix-ioframe/src/cell.rs
+++ b/actix-ioframe/src/cell.rs
@@ -29,7 +29,7 @@ impl<T> Cell<T> {
         }
     }
 
-    pub fn get_mut(&mut self) -> &mut T {
-        unsafe { &mut *self.inner.as_ref().get() }
+    pub(crate) unsafe fn get_mut(&mut self) -> &mut T {
+        &mut *self.inner.as_ref().get()
     }
 }
diff --git a/actix-ioframe/src/dispatcher.rs b/actix-ioframe/src/dispatcher.rs
index a43646c3..54e5deb5 100644
--- a/actix-ioframe/src/dispatcher.rs
+++ b/actix-ioframe/src/dispatcher.rs
@@ -153,7 +153,7 @@ where
                     };
 
                     let mut cell = self.inner.clone();
-                    cell.get_mut().task.register();
+                    unsafe { cell.get_mut().task.register() };
                     tokio_current_thread::spawn(
                         self.service
                             .call(Item::new(self.state.clone(), self.sink.clone(), item))
@@ -163,9 +163,11 @@ where
                                     Ok(None) => return Ok(()),
                                     Err(err) => Err(err),
                                 };
-                                let inner = cell.get_mut();
-                                inner.buf.push_back(item);
-                                inner.task.notify();
+                                unsafe {
+                                    let inner = cell.get_mut();
+                                    inner.buf.push_back(item);
+                                    inner.task.notify();
+                                }
                                 Ok(())
                             }),
                     );
@@ -181,7 +183,7 @@ where
 
     /// write to framed object
     fn poll_write(&mut self) -> bool {
-        let inner = self.inner.get_mut();
+        let inner = unsafe { self.inner.get_mut() };
         let mut rx_done = self.rx.is_none();
         let mut buf_empty = inner.buf.is_empty();
         loop {